On Sun, May 14, 2006 at 09:03:42PM +0200, Andreas Neth wrote:
> Hello together,
> 
> I'm running NetBSD 3.0 along with xen2, and today I ran into trouble  
> with my setup.
> 
> Up to now, I had dom0 export a disk via nfs to the domUs. I now  
> charged one of the domU's with being the nfs-server.
> I have two bridges configured, bridge0 shares an external wm0 with  
> all domUs and bridge1 creates a private lan with dom0's tap0.

Is dom0's tap0 used for something ? You don't need to have an interface
belonging to dom0 for bridging domUs together.

> 
> Traffic passing from other physical machines passes just fine to the  
> domU's, but anything between 2 domUs has a delay of about 20 seconds.  
> ICMP works, but does not even show the latency, instead reportint an  
> RTT of 0,4ms.
> The delay even happens when pinging the domU by itself

You could run tcdump on dom0, to get more details on what's going on

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--